For Florida, buy the bolt gun you want in 223 and don’t worry about the barrel. Then take it to your local smith and have him cut to 16 and thread. You really don’t need the bigger caliber and less recoil makes it easier to shoot better. There is plenty on this in the 223 for deer, elk, bear, moose thread. If you haven’t seen it, it’s worth looking. With the right bullets, that little round will do massive damage. If it can handle moose, it can handle pigs and itty bitty Florida deer. If you don’t handload, buy the Black Hills 77 TMK factory loads or Hornady 73 gr ELDM to hunt with. Buy Hornady Frontier or similar for practice and shoot the shit out of it. Lots of people will recommend Tikkas here and I’d be one of them. They more than $500, but they are just a super dependable gun with a slick action, good magazines, and a great trigger. And you can get them in stainless for that wet Florida climate. If you buy something cheaper you’ll probably end up selling it and upgrading later.